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XR32430EUCRTR-F Datasheet, PDF (5/14 Pages) Exar Corporation – 3-Driver/5-Receiver Intelligent RS-232 Transceiver with 1.65V-5.5V Interface
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Pin Configuration
R1IN 1
R2IN 2
R3IN 3
R4IN 4
R5IN 5
T1OUT 6
T2OUT
T3OUT
32
31
30
29
28
27
26
25
XR32430
32 pin QFN (5x5mm)
GND
C1-
R2OUT
18 R1OUT
17 R2OUT
XR32430/XR32431
32
31
30
29
28
27
26
25
R1IN 1
GND
R2IN 2
C1-
R3IN 3
R4IN 4
R5IN 5
T1OUT 6
XR32431
32 pin QFN (5x5mm)
R2OUT
T2OUT
18 R1OUT
T3OUT
17 R2OUT
Pin Assignments
XR32340
XR32341
Pin Name
Type
Description
1, 2, 3, 4, 5
6. 7, 8
9,16, 25, 32
10, 11, 12
13,14,15,
17, 18, 19
20
21
22
23, 28
24
-
26
27
29, 30
31
-
1, 2, 3, 4, 5
6. 7, 8
9,16, 32
10, 11, 12
13,14,15,
17, 18, 19
20
21
22
23, 28
24
25
26
27
29, 30
31
-
R1IN, R2IN,
R3IN, R4IN,
R5IN
T1OUT, T2OUT,
T3OUT
NC
T3IN, T2IN, T1IN
R5OUT, R4OUT,
R3OUT, R2OUT,
R1OUT, R2OUT
Status
Shutdown
Online
C1-, C1+
GND
VL
VCC
V+
C2+, C2-
V-
Paddle
Inputs
(5K pull-
dwn)-
Output
-
Input
Output
Output
Input
Input
Analog
Supply
Supply
Supply
Analog
Analog
Analog
Supply
±15KV ESD Protected, RS-232 Receiver Inputs
±15KV ESD Protected, RS-232 Driver Output
No Connect (not connect to the die). Can be left floating or tied to GND or VCC.
TTL/CMOS Driver Input
TTL/CMOS Receiver Output
TTL/CMOS level output indicating if no valid RS-232 levels are present at the R1IN or
R2IN input pins.
TTL/CMOS level input, when driven low puts the part into shutdown mode (tri-stating
driver outputs and disabling the charge-pump); normal operation when driven high.
TTL/CMOS level input. A low input enables Auto On-Line mode, a high input disables
Auto On-Line Mode.
Negative and positive terminals of voltage doubler charge pump capacitor.
Ground
I/O Power Supply
Power Supply
Regulated positive (+5.5V) charge pump rail.
Positive and negative terminals of the inverting charge pump capacitor.
Regulated positive (-5.5V) charge pump rail.
Ground. The exposed paddle on the bottom of package is connected to device
ground. The paddle should be connected to ground on pcb.
© 2014 Exar Corporation
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exar.com/XR32430_XR32431
Rev 1A
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